Explain what is a three tier data warehouse?
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Explain what are data marts?
What is surrogate key? Where we use it?
What are the different methods of loading dimension tables?
What is ETL process in Data warehousing?
What are the different types of datawarehosuing?
what is indexing ? what are different types of indexes supported by oracle ?
Which component has onread method and what it is used for?
What is a ETL/ How does Oracle support the ETL process?
How to handle time period attribute for time dependent data?? a.)add time period as a part of pk b.)add time period simply and make it nullablec.)add time period simply and make it not null.
Explain the versions of reportnet?
What is the very basic difference between data warehouse and operational databases?
Explain dimensional modelling?